Fair Labors Standards Act is the first national legislation on minimum wages.So the first option that is given in the given question is the correct option. The Fair Labor Standards Act was signed by the then President of United States of America, Franklin D. Roosevelt on 25th of June in the year 1938. It was one of the greatest acts regarding social security of the American citizens that was passed by the president. On the same day the president had signed a total of 121 bills.